Mary Lloyd — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Mary Lloyd across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1894), then head of a 2-person household.

Age 46 b. ~1894 Female Head Born: Tennessee Widowed

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Lloyd
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	Black
Age	46
Marital Status	Widowed
Birthplace	Tennessee
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Additional Details
Class of Worker	0
Highest Grade	No 5
1935 Residence	Same house
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee
Township / Ward	Chicago
Est. Birth Year	~1894

Household Members

Census records only state relationship to the household head. Pairwise kinship is derived (~90–95% accurate), not recorded. Step/blended families and boarders can break it.

2 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Clara Lloyd	Daughter	—	28	~1912
Mary Lloyd	Head	—	46	~1894

Census Appearances

1920

Cook, Illinois

Spouse, age 25

Cook, Illinois · implied b. ~1895 — 11 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Lloyd
Given Name	Mary L.
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	25
Marital Status	Married
Birthplace	Tennessee
Father's Birthplace	Tennessee
Mother's Birthplace	Tennessee
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

1930

Cook, Illinois

Other, age 32

Cook, Illinois · implied b. ~1898 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Lloyd
Given Name	Mayne
Relationship to Head	Roomer
Sex	F
Color / Race	Black
Age	32
Marital Status	Married
Birthplace	Tennessee
Age at First Marriage	17
Father's Birthplace	Tennessee
Mother's Birthplace	Tennessee
Occupation	none
Can Read/Write	Yes
Veteran	No
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

1940

Cook-County, Illinois

Head, age 46

Cook-County, Illinois · implied b. ~1894 — 2 household members

Surname	Lloyd
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	Black
Age	46
Marital Status	Widowed
Birthplace	Tennessee
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Class of Worker	0
Highest Grade	No 5
1935 Residence	Same house
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

Model Tree

Linked across censuses

Our Model Tree links Mary Lloyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Mary Lloyd

Head · 1940 · age 46 · b. ~1894 · Illinois

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Cook-County, Illinois Open full size

Page Contents

39 people indexed on this census page (nara:1940:m-t0627-00930-00739)

Line	Name	Age	Relation	Occupation	Birthplace
1	Geraldine Hall	7	daughter	—	Illinois
2	George Trice	4	guest	—	Illinois
3	George Watkins	25	Head	Presser	Illinois
4	Louise Brooks	53	Lodger	Cleaning	Illinois
5	Emma Jones	50	Head	House Manager	Illinois
6	Pearl Hayes	52	Lodger	Manager	Illinois
7	Chong Kee	56	Head	Worker	China
8	Max Klein	51	Head	Clerk	Poland
9	Tillie Klein	49	Wife	Asst Manager	Illinois
10	Edward Klein	14	son	Clerk	Illinois
12	William Bradden	68	Head	Minister	Texas
13	Divera Bradden	43	daughter	Clerk	Colorado
14	Joy Bradden	29	daughter	Teacher	Illinois
15	Durwood Bradden	48	son	Porter	Colorado
16	Earl Vaughn	33	Son-in-law	Porter	Arkansas
17	Elizabeth Vaughn	38	daughter	—	Michigan
18	James Jones	20	Son-in-law	New Worker	Kansas
19	Mary Lou Brinkley	33	daughter	—	Illinois
20	Olive Brinkley	6	Granddaughter	—	Illinois
21	Mary Lloyd THIS PERSON	46	Head	—	Tennessee
22	Clara Lloyd	28	daughter	Maid	Tennessee
23	Connie Withers	44	Head	—	Mississippi
24	Mary Withers	16	daughter	—	Illinois
25	Deloris Withers	11	daughter	—	Illinois
26	Odessa Hyman	36	Head	—	Texas
27	Ulysses Hyman	19	son	—	Texas
28	Otis Hyman	17	son	—	Illinois
29	Ethel Wood	56	Head	—	Kansas
30	Clark Wilson	53	Head	—	Iowa
31	Ernest Grant	35	Head	Foreman	Georgia
32	Lee Turner	42	Head	Common Laborer	Mississippi
33	William Morris	61	Head	Common Laborer	North Carolina
34	Russell M. Dwayne	49	Head	Dentist	Ohio
35	Ethel M. Dwayne	42	Wife	Musician	Kentucky
36	Jr. Russell M. Dwayne	5	son	—	Illinois
37	Sam Henderson	25	Head	Clerk	Mississippi
38	Jack Henderson	71	Father	—	Tennessee
39	Rachel Henderson	65	Mother	Cleaning	Mississippi
40	Mary Dene Holiway	6	Granddaughter	—	Illinois

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.

Source: National Archives and Records Administration (NARA)

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